PATIL RAHUL NAGRAJ, NIRMAL M. SHARMA, PARTH V. PRAJAPATI, AMIT N. SAINI, AATISH D. BAROT, and MEET J. SHUKLA. “HYDRAULIC CUM PNEUMATIC VEHICLE”. International Journal of Advance Research in Engineering, Science & Technology, vol. 5, no. 4, Apr. 2018, pp. 450-6, https://ijarest.org/index.php/ijarest/article/view/1488.